Creating a new event or task
This article describes how to create a new event or task in the Lightning calendar add-on for Thunderbird.
Exporting and sharing a calendar
This article describes how to export and share a calendar from the Lightning calendar add-on for Thunderbird.
Creating New Calendars
Using Thunderbird it's possible to have multiple calendars. You can connect to your online calendars during email account setup or create new calendars later.
Adding a holiday calendar
Learn how to add a list of holidays to your calendar in Thunderbird.
Calendar updates issues with Thunderbird
Common calendar update issues for Thunderbird with the Lightning add-on and recommendations to deal with them.
Changing calendar preferences
This article describes how to change the preferences (name, color, location etc.) of a single calendar.
Lightning User Interface
This article describes the Lightning user interface. (Lightning is a popular calendar add-on for Thunderbird.)
This article describes how to configure the Lightning add-on for Thunderbird.
Changing the Date or Time of an Event
This article describes how to change the date or time of an event.
Inviting Other People to Events
If you need to set up a meeting, and keep track of who's attending and who is not, Lightning can do this as well as allow you to send invitations to people who do not have Thunderbird/Lightning, including Microsoft Outlook users!
Creating a recurring event
This article describes how to create a recurring event in the Lightning calendar add-on for Thunderbird.
Enable email invitations for CalDAV servers configured to do serverside scheduling
How to configure Thunderbird/Lightning to send email invitations even if you're subscribed to a CalDAV calendar supporting serverside scheduling.
New in Thunderbird 91
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 91.0.